M62475FP MITSUBISHI, M62475FP Datasheet
M62475FP
Available stocks
Related parts for M62475FP
M62475FP Summary of contents
Page 1
... AUTOMATIC ADJUSTMENT CD PREAMPLIFIER SERVO CONTROLLER DESCRIPTION The M62475FP that contains preamplifier/servo amplifier necessary for optical pickup servo control for CD player. This IC also supports automatic adjustment with microcomputer control. FEATURES Pickup servo control can consist of the M62475FP only Supporting 3-beam system ...
Page 2
... SGT TE GAIN TE TS NON- REVERSE REVERSE CONTROL OUT INPUT TG1 TC/ TG2 TE REVERSE INPUT SW SHOCK SW MITSUBISHI ELECTRIC MITSUBISHI SOUND PROCESSOR ICs M62475FP CONSTANT FOR DATA JP1 ADJUSTMENT INPUT INPUT FILTER DATA CLOCK LATCH REFERENCE OUTPUT INPUT INPUT CURRENT ...
Page 3
... Thermal derating (Ta 25˚C) Operating ambient temperature T opr T Storage temperature stg AUTOMATIC ADJUSTMENT CD PREAMPLIFIER SERVO CONTROLLER (Ta=25˚C, unless otherwise noted) Ratings 750 7.5 -20 to +75 -40 to +125 MITSUBISHI ELECTRIC MITSUBISHI SOUND PROCESSOR ICs M62475FP Function Unit mW/˚C ˚C ˚ ...
Page 4
... Comparison with G VFS Vi=4.0V Vi=1.0V VREF reference + voltage VREF reference, pin 35 - voltage VREF reference, pin 35 VREF reference Vi=50mVrms Vi=4.0V Vi=1.0V VREF reference VREF reference Vi=50mVrms Comparison with G VTS Vi=4.0V Vi=1.0V VREF reference MITSUBISHI ELECTRIC MITSUBISHI SOUND PROCESSOR ICs M62475FP Limits Min. Typ. Max. 20.0 30.0 40.0 2.4 2.5 2.6 3.1 5.1 7.1 9.7 11.7 13.7 — 1.4 2.0 — 3.5 4.0 — 1.0 1.5 -60 0 +60 -0 ...
Page 5
... C (Pin )=680pF 19 + VREF reference - VREF reference C (Pin )=2.2nF 27 Pin , VREF reference 34 Pin , VREF reference 34 Pin , VREF reference 6 Pin , VREF reference 6 MITSUBISHI ELECTRIC MITSUBISHI SOUND PROCESSOR ICs M62475FP Limits Min. Typ. Max. +0.10 +0.15 +0.20 -0.20 -0.15 -0.10 +42.5 +62.5 +82.5 -42.5 -62.5 82.5 +110 +140 +170 -170 -140 -110 — — ...
Page 6
... FSR I :Focus search current FSR At time of rising:110µA At time of falling:60µA FSR Vth± Voltage setting Vth+:Vref+0.7V Vth-:Vref-0.7V MITSUBISHI ELECTRIC MITSUBISHI SOUND PROCESSOR ICs M62475FP B 35 FOCUS SEARCH CIRCUIT A SEARCH VOLTAGE DETECTION FOCUS SEARCH OPERATION FOCUS SERVO ON VA ...
Page 7
... EQUIVALENT CIRCUIT (Tracking Balance) The I/V CONVERSION ADJUSTMENT RESISTANCE BIAS VOLTAGE EQUIVALENT CIRCUIT (Tracking Focus Gain) GAIN ADJUSTMENT ERROR AMPLIFIER MITSUBISHI ELECTRIC MITSUBISHI SOUND PROCESSOR ICs M62475FP TRACKING ACTUATOR ADJUSTMENT RESISTANCE VOLTAGE COMPARATOR AMPLIFIER BIAS VOLTAGE TRACKING ACTUATOR OR FOCUS ACTUATOR VOLTAGE COMPARISON ACTUATOR EX-OR ...
Page 8
... ADJ COMMAND NO CBA < 7 ADJUSTMENT YES Setting of CBA CBA+1 CLPF PIN DATA OUT=0 NO YES Setting of CBA CBA-1 ADJ COMMAND ADJUSTMENT MITSUBISHI ELECTRIC MITSUBISHI SOUND PROCESSOR ICs M62475FP V Vthc+ 27 Vref Vthc- DOUT PIN 26 0 MCU CHECK POINT CBA END OF V Vthc+ 27 ...
Page 9
... Reverse jump JF Forward jump TS ON Track servo ON SS OFF Sledge servo OFF SR Reverse sledge SF Forward sledge SS ON Sledge servo ON MITSUBISHI ELECTRIC MITSUBISHI SOUND PROCESSOR ICs M62475FP They are held until new data is entered. Command status setting Sledge ...
Page 10
... Test conditions " (at the falling " (at the falling OUTPUT "1" status "0" OUTPUT "1" status "0" MITSUBISHI ELECTRIC MITSUBISHI SOUND PROCESSOR ICs M62475FP MSB Limits Min. Typ. Max. — 100 200 2.5 5 — ...
Page 11
... Signal Waveform with a jump KICK PULSE ( OUT JP1 AUTOMATIC ADJUSTMENT CD PREAMPLIFIER SERVO CONTROLLER OFF OFF OFF ON ON OFF OFF OFF OFF OFF OFF ON ON OFF OFF OFF BRAKE PULSE MITSUBISHI ELECTRIC MITSUBISHI SOUND PROCESSOR ICs M62475FP ( ...
Page 12
... TC TRUE VALUE LIST Output FSOK 1 0 "1"Mirror "0"Track MR signal detector Detects an envelope of the HF signal and sends data to the internal logic controller. MITSUBISHI ELECTRIC MITSUBISHI SOUND PROCESSOR ICs M62475FP SLEDGE (D3, D2 OFF OFF OFF SS ON ...
Page 13
... FOCUS_ADJ BALANCE_ADJ TRACK_ADJ FOCUS_ADJ BALANCE_ADJ Note:Pick-up servo operation preparatory completion. For example, reading TOC requires to move pick-up to the innermost circumference. MITSUBISHI ELECTRIC MITSUBISHI SOUND PROCESSOR ICs M62475FP NO Move inside [00000001] sending YES Wait 50 msec NO FOCUS servo check YES Focus gain preparatory adjustment ...
Page 14
... YES CBA=CBA+1 1300 Hz output for 160 msec SG_OUT NO Data Out=0 YES CBA=CBA-1 Note: Set the frequency of the adjustment signal according to the system. MITSUBISHI ELECTRIC MITSUBISHI SOUND PROCESSOR ICs M62475FP 5 FOCUS_ADJ FOCUS_ADJ ZZ=11 CBA=FOC ADJUST FOC=CBA END SG_OUT (For T msec LPF capacitor discharge) NO ZZ=11 ...
Page 15
... Data Out=0 to 100 to 1000 HFD=0 8-2. SHORT_JUMP SJ1 SJ2 MITSUBISHI ELECTRIC MITSUBISHI SOUND PROCESSOR ICs M62475FP NO YES HFD=1 SHORT_JUMP HFD=1 Move to the outside Send [00100100] Send [00101000] COUNT JP1=0 Set timer to 5 msec CATCH ...
Page 16
... AUTOMATIC ADJUSTMENT CD PREAMPLIFIER SERVO CONTROLLER LC=180µsec/ (Loop time) NBY2=N/2 NO NBY2 > 0 YES NO YES NO Time over NO YES END MITSUBISHI ELECTRIC MITSUBISHI SOUND PROCESSOR ICs M62475FP CATCH Send [00111111] (No latch signal) JP1=0 LOOPN=LC NO DATA OUT=1 YES LC=LOOPN Time over ? DATA OUT=1 YES LC=LC-1 YES Time over ? ...
Page 17
... SHORT_JUMP label) AUTOMATIC ADJUSTMENT CD PREAMPLIFIER SERVO CONTROLLER 8-4. LONG_JUMP LONG_JUMP Move to the outside Send [00111010] HFD=1 Wait 150msec Send [00111000] Wait 30msec Set the timer to 120 msec SJ2 MITSUBISHI ELECTRIC MITSUBISHI SOUND PROCESSOR ICs M62475FP NO YES Send [00110101] (Jump to the SHORT_JUMP label ...
Page 18
... MITSUBISHI ELECTRIC MITSUBISHI SOUND PROCESSOR ICs M62475FP 5V 10µ TEST CONTROLLER 2.2n 2.2k 100k 6.8k 100k 22k 39k 4.7k 6.8k 2.2k 680p Units Resistance : Capacitance :F ...
Page 19
... TS1 56k 1M 3.3k 82k 1µ 5.6k 0.22µ 100n 15k 100p 22n MITSUBISHI ELECTRIC MITSUBISHI SOUND PROCESSOR ICs M62475FP MCU 47µ 56k 2.2µ ADJUST I/F 12k RESET 56k 47k 47k 47k BIAS (COM) ...